103 20. LINDSAYA, EULINDSAYA. 



mediate between traptziformis and stricta, and is sometimes distinguishable from the 

 former only with difficulty. 



pairs 



lower line often considerably decurved, the upper rounded, nearly entire, closely 

 placed but imbricated ; colour bright-green, but texture coriaceous ; sori in a 

 continuous line round the upper edge. Hk. tip. I. p. 216. L. elegans, Hk. Ic. 

 PL t. 98. (an unbranched form}. 



Hab. Tropical America from Mexico and the West Indian Islands southward to "Rio 

 Janeiro. The plant well deserves its name. The pinnules and stems are so rigid, that 

 specimens can be only made to adhere to paper with great difficulty. It is occasionally 

 even tripinnatifid. 



21. L. rigida, J. Sm. ; rhizome wide-creeping; st. 4-6 in. 1., rigid, erect, 

 prickly towards the base ; fr. with a long unbranched central point and 1 to 4 

 pairs of flexuose lateral branches, 4-8 in. 1. ,' pinnl. 3-4 lin. br., 2 lin. deep, the 

 lower edge often falcate, the upper 3 or 4 times bluntly, not deeply lobed, placed 

 close together but not imbricated ; texture very thick and coriaceous ; veins pro- 

 minent ; sori in a marginal line on the lobes. Hk. Sp. 1. p. 217. t. 63. A. 



Hab. Malayan Peninsula, on Mount Ophtr. Much resembling L. stricta, but the 

 texture is thicker, the veins more conspicuous, and the upper margin of the pinnules is 

 conspicuously crenate. The colour of the mature frond is sepia-brown, and the pale 

 veins stand out from the groundwork in relief. 



22. L. Kirkii, Hk. MSS. ; st. 1-2 ft. L, stout, suberect ; fr. 1-2 ft. 1., 6-9 in. 

 br., with a long unbranched point and numerous (6-9) erecto-patent branches on 

 each side, 6-9 in. 1. ; pinnl. about \ in. bi\, j in. deep, much decurved at the 

 base, the outer edge rounded, the upper crenate, that nearest the rachis fre- 

 quently overlapping it, and the pinnules placed so close that one overlaps the 

 base of the next above it ; texture thinly herbaceous ; veins prominerttly 

 channelled ; sori numerous round the upper edge, not more than twice as 

 broad as deep, protruded from the margin, terminating only one or two of 

 the veins. 



Hab. Seychelles flslands ; gathered by M. Bouton, Dr. Kirk, and E. W. Eawson, 

 Esq. A very distinct and handsome species. The veins occasionally anastomose. 



23. L. pendula, Klotzsch ; rMzome wide-creeping, densely clothed with dark 

 chesnut-brown fibrils ; st. erect, 6-9 in. 1., naked except below, polished ;fr. 9-12 

 in. L, 3-4 in. br., oblong in general outline, the main rachis without pinnae except 

 above the branches, which are 1^-2 in. 1., and spread from the stem at right 

 angles, or even curved slightly downwards ; pinnl. nearly 2 lin. br., hardly over 

 1 lin. deep, almost obversely triangular in shape, placed close together, but not 

 imbricated, those of the upper side of the branches often deflexed and pendulous ; 

 texture subcoriaceous ; sori in a continuous line along the upper edge of the pinnse. 

 Hk.Sp. 1.^.213. 



Hab. British Guiana ; gathered by Schomburgk, and again recently by Appun. 



24. L. Sprucei, Hk. MSS. ; rhizome short-creeping ; st. erect, wiry, 6-15 in. 1. ; 

 fr. 3-6 in. 1., about 1-|- in. br., ovate, bi- or tripinnatifid, branches f-1 in. 1., rigid, 



filiform, spreading or decurved towards the point ; pinnl. about 1 lin. deep, fiabel- 

 late, cut down to the rachis into narrow linear mucronate segments, ^-1 lin. 1., 

 those of the upper side of the branches often deflexed and pendulous ; texture 

 coriaceous ; fertile segm. broader at the apex (^ lin. br.) ; sori not quite occu- 

 pying the whole point. 



Hab. San Carlos, on the Rio Negro, N. Brazil, Spruce, 2988. A very curious plant, 



